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Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

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Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

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Thyroid conditions may make getting pregnant impossible.

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In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Possible relationships between fossil and living primates. Possible relationships between fossil and living primates.
Many children learn not to express prejudice overtly but may feel it implicitly. Many children learn not to express prejudice overtly but may feel it implicitly.
Working and Living and Playing in the City Dump of Phnom Penh, Cambodia Working and Living and Playing in the City Dump of Phnom Penh, Cambodia
Family structure is a vital aspect in the socialization of children. Family structure is a vital aspect in the socialization of children.
Structural MRIs reveal thinning of sensorimotor cortex in children with Tourette syndrome. Red and ... Structural MRIs reveal thinning of sensorimotor cortex in children with Tourette syndrome. Red and ...
Belief that premarital sex is “not wrong at all,” Canada, 1975—2016 (in percent) Belief that premarital sex is “not wrong at all,” Canada, 1975—2016 (in percent)
Video: Osmosis - water transport

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